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. 2018 Jan 25;15(4):4278–4288. doi: 10.3892/ol.2018.7858

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Copyright: © Sun et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 3. — Immunohistochemical staining of squamous cell carcinoma tissue sections demonstrating p-STAT3 expression (magnification, ×200). (A) Squamous cell carcinoma specimen demonstrating high expression of p-STAT3-positive tumor cells (score 3). (B) Squamous cell carcinoma specimen demonstrating moderate expression of p-STAT3-positive tumor cells (score 2). (C) Squamous cell carcinoma specimen demonstrating low expression of p-STAT3-positive tumor cells (score 1). (D) Photomicrographs of a corresponding normal lung tissue specimen with no p-STAT3-positive tumor cells (score 0). p-STAT3; phosphorylated signal transducer and activator of transcription 3.